Interestingly, the film's script doesn't mention the narrator's name. However, in an interview, David Fincher, the film's director, revealed that the narrator's name is indeed "Jack," but it's not explicitly stated in the script. The confusion might have arisen from the fact that, in some early drafts of the screenplay, the narrator's name was mentioned as "Jack."

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Edward Norton, the actor who played the role, has also discussed the anonymity of his character. In an interview, he mentioned that the lack of a name was intentional, symbolizing the character's complete disconnection from society and his own identity.

Without a name, he loses his specific identity and becomes a stand-in for the audience member. The script even jokes about this in the cinema scene, where the Narrator explains that Tyler Durden splices single frames of pornography into family films. The Narrator quips, "A nice, big... waiting to be filled." The implication is that the audience, like the Narrator, is waiting to be filled with a sense of purpose, having lost their own identities in a consumerist culture.